The man asked to take the 17-year-old's picture Thursday. She tried to cover her face with her coat and walked away, according to police.

He followed her while asking inappropriate questions, along 26th Avenue at 44th Street.

The girl phoned for help and was soon after picked up.

The man is described as white, between 40- to 50-years-old with brown shaggy hair and chipped teeth. He walks with a limp and was wearing a brown long-sleeved shirt with dark pants and a grey baseball cap.

Police are asking anyone with information to call 403-266-1234 or Crime Stoppers at 1-800-222-8477.